1025742161 has 8 divisors (see below), whose sum is σ = 1031937984. Its totient is φ = 1019556720.

The previous prime is 1025742131. The next prime is 1025742169. The reversal of 1025742161 is 1612475201.

1025742161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1025742161 - 2⁶ = 1025742097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025742169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290396 + ... + 293906.

It is an arithmetic number, because the mean of its divisors is an integer number (128992248).

Almost surely, 2^1025742161 is an apocalyptic number.

It is an amenable number.

1025742161 is a deficient number, since it is larger than the sum of its proper divisors (6195823).

1025742161 is a wasteful number, since it uses less digits than its factorization.

1025742161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5191.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 1025742161 is about 32027.2096973808. The cubic root of 1025742161 is about 1008.5081268154.

The spelling of 1025742161 in words is "one billion, twenty-five million, seven hundred forty-two thousand, one hundred sixty-one".